Road grader



Oct. 16, 1928.

B. 'H. MANsKER ROAD eRxfiSER Filed A rilas, 192':

2 Sheets-Sheet 1 2 sheets-sheet. 2

Oct. 16,1928.

B. H. MANSKER ROAD GRADER Filed April 25,- 1927 Patented Oct. 16, 1928.

i uNrT so stares PATENT O IC BENJAMIN H. MANSKEROF PINCKNEYVILL'E, ILLINOIS. l

ROAD GRADER.

Application filed April 23, 1927. Serial-No. 186,079.

the highway.

Another object of the invention is to provide novel'means whereby the scraper blades and the grader blocks may be tilted forwardly or backwardly, and be held in any positions to which they may have been tilted. Another object of the invention is toprovidenovel means for drawing the gangs togethcr, and for holding themin any position to which they may have been adjusted, with respect to each other, transversely of the draft line. I Another objectofthe'inventionis toimprove the scraper blade so that it-will havea double edge for engagement with the road way, the construction being such that the scraper blade will not tend to j umpi about.

It is within the province of the disclosure to improve generally and to enhance the ut 1lity of devices of that type to which the mvention appertains. 1 1

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may bemade within the scope of what is claimed, without departing from the spn'it ofthe invention.

In the drawings Figure 1 shows in top plan, a device constructed in accordancewith the invention;

Figure 2 is an end elevation disclosing one of the gangs;

Figure 3 is a section taken about on the line 33 ofFigurel; V

Figure 1 is a sectiontaken abouton the line l 1 of Figure 1. p

The device forming the subject matter of this application comprises oppositely dis-v posed gangs 1 and 2. Each gang includes a rear line of grader blocks 3 having their ends I overlapped, as shown at 1, pivot elements 5 1 connecting the overlapped ends 4 of the blocks 3 for vertical swinging movement, so that the rear lme of grader blocks 3 can conform. to the cross sectional curve, or crown,

standing levers 16.

the roadway. A line ofintermediate grader blocks6- are :disposed in front of the rear grader blocks 3. The ends of the intermediate.graderblocks 6 are overlapped as shown at 7, the overlapped ends 7 offthe graderblocks G being connected by pivot ele ments 8 so that the grader blocks 6 can'have relative vertical swinging movement and thus conform to the crown of the roadway. The pivot elements 5 and 8may be bolts, passing through the overlapped ends of the blocks. A line of scraper blades 9-is located in front of..the line of intermediate grader blocks 6; Thescraper blades 9 areoverlapped at their ends, asshown' at 10. Spacersll are interposed between the overlapped ends of the scraper blades 9. 'Pivot elements 12 pass through the spacers 11, and through the overlapped ends of the blades 9, and thus the scraper blades 9 are pivotally connected for relative vertical movement, so that they may conform to the shape of the roadway.

Upstanding levers 1 1 are mounted on the rear grader blocks 3, there being similar 1e: vers 15 on the intermediate grader blocks 62 The scraper blades 9 are supplied with up The central one of: the levers 14 has an upwardlyjprolongedextension 17 carrying a latch mechanism 18. Up per connecting bars 19 are united by pivot elements 21 with the lovers 1 1, 15 and 16. Lower connecting bars are united by piv- 0t elements 23 with the levers 14, 15 and 16. On the rear end of the central upper connecting bar 19 there is a segment 22 wherewith the latch mechanism 18 cooperates. It is possible to disengage the latch-mechanism 18 from the segment 22, and, by means of the lever extension 17, the levers 14,15, and 16, and the bars 19 and 20, to swing the blocks 3 and 6 and the scraper .blades 9 to any desired angle with respect to the vertical. The parts specified may be held in adjusted positions byengaging the latch mechanism 18 with the segment 22. The forward ends of thelower connections 20 are pivotally united by means of links 24 with trees 25' having a plurality of openings 26, in any of which may be.

mounted a V-shaped draft connection 27.

The central bars19 are connected with the side bars 19, as shown in Figure 1 by diagonal braces 28, the ends of which may be mounted on certain of the pivot elements 21 that connect the levers 14, 15 and 16 with the upper bars 19.

The scraper blades 9 are inclined for-- ber 33, sueh asa cable or other flexible element,one end of-thefdraw member or cable .33 being connected at 34 to the innermost one of the blocks '6 of the gang 1L 7 The flexible element 33 is wound abou-t-ashaft 35jjourna'led in bearingsfifi ion the outermost scraper blade 9 of the gang 2', the; shaft 35 being journaled in bea'rings36 on the outermost one of the scraper blades 9 of thegang 2; The shaft 3'5 isgequippedwith crankv37 of any other suit-able means whereby thesh'a-ft may be rotated. A flexibleeonnectioin'such as a chain 38 connects the inner scraper blades 9 of the gangsl and 2. A flexible connection, such as a chain-39, is secured at 40,- a-t'oneend, to

. the innermost block-3 of the gang '2, and the innermost block-3 of the gang 1 carries a hook 41, or the like, which is pivotally mounted, the hook being adapted to be engaged in any of thelinks of thechain 39,- tovary' the length of the chain. 7 By means of the cran-k"37,1the

shaft 35 may be rotated, and the flexible element'33: may be employed to pull the gang lfen'dwise withrespe'ct to the gang 2'. -Whe'n the gangs have been adjusted properly with respect to each other, transversely of the The scraper blade thus has a double draft line, the effective length of the chain 39 is adjusted accordingly, by engaging the hook 41 in any of the links of the chain, and

themaehine,xthen, will ride in the relation shown in F igur'el, for instance.

)Vh-at is claimed is a 1'. A grader of the class described, comprising opposite-lydisposed gangs, a draw member connected to one gang and extended transversely of the draft line to the other gang, means on said other gang for winding up the draw member thereby to pull the gangs toward each other and to dispose the gangs at different angles with respect-to the draft line,

flexible connections between the front and rearends of the gangs and located at the inner ends of the gangs, and means for varying the length of one of the connections.

' '2. Ai grader of the class described, comprising oppositely disposed gangs, flexible.

connections between the inner ends of the gangs and located at the forward and rear ends of the gangs, means for varying the length-of one of the connections, a winding device at the forward outercorner ofzone gang, a di'aw member"engaged with the winding device, an anchor connecting the draw member with the innerend of'the other gang at a pointbetwe'en the connections, a

direction-changiiig guide on said one gang and located behind the Winding device, the

draw member, being extended from the anchor-:to the guide, transversely of the draft line, and forwardly from the guide to the winding device. a I

' In testimony that I clai-inthe foregoing as my own, I have hereto aflixed my signature.

2 J BENJAMINeH. MANSKER. V 

